Summary of the invention
The present invention in view of the above-mentioned prior art situation and complete, its purpose is to provide a kind of high frequency respirator systemsSystem carries pneumatic drive system.
For this purpose, the present invention provides a kind of high frequency respirator system, including turbofan, compressed oxygen gas source, mixing chamber, suctionAir circuit and high frequency oscillation module, the turbofan and the compressed oxygen gas source are connected to the mixing chamber respectively, described mixedRoom is closed also to be connected with the air-breathing circuit；The high frequency oscillation module is located at the air-breathing circuit, suitable for returning the air-breathingGas in road generates oscillation pressure ripple.
Optionally, further include proportioning valve, be located at the air-breathing circuit in and be located at the high frequency oscillation module with it is describedBetween mixing chamber, gas flows to the high frequency oscillation module through the proportioning valve in the mixing chamber.
Optionally, further include second pressure flow sensor, be located in the air-breathing circuit and be located at the high frequency vibratingIt swings between module and the proportioning valve, is adapted to detect for flowing into the pressure and flow of the gas of the high frequency oscillation module.
Optionally, further include oxygen concentration sensor, be located in the air-breathing circuit, suitable for in the air-breathing circuitOxygen concentration is monitored.
Optionally, it is provided with refrigerator in the mixing chamber, suitable for making the gas in mixing chamber cool down.
It optionally, further include safety valve, the safety valve is located in the air-breathing circuit.
Optionally, further include safety return circuit, the air-breathing circuit and expiration circuit communication are set in the safety return circuitIt is equipped with shut-off valve.
Optionally, the high frequency respirator system further includes flow-stop valve, is set in air-breathing circuit and is located at the heightBetween frequency oscillation module and patient end.
Optionally, further include check-valves, be set between the mixing chamber and proportioning valve, for preventing the air-breathing from returningGas backstreaming in road is into the mixing chamber.
Optionally, further include temperature sensor, be located in air-breathing circuit, be located at patient end and the mixing chamber itBetween, suitable for monitoring the gas temperature in air-breathing circuit.
Compared with the existing technology, high frequency respirator system provided by the present invention has the advantage that
(1) being used cooperatively by turbofan and high frequency oscillation module substitutes common compressed air using air, leads toPatient end will be delivered to after supercharging air by crossing turbofan, without using compressed air source.
(2) in such a way that proportioning valve cooperates check-valves, by the setting of check-valves, also high frequency oscillation unit is avoided to compareThe gas circuit of example valve upstream forms interference, by the setting of the proportioning valve, on the one hand can reduce the turbofan conveyingOn the other hand the disturbance of gas conveying is adjusted to the gas pressure and flow of the high frequency oscillation module.
(3) in such a way that safety valve cooperates safety return circuit, reduce the risk of high frequency respirator system, in addition, passing throughThe design of safety return circuit and expiration circuit and expiration circuit ensure that the possibility of Conventional ventilation and high-frequency ventilation.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention canTo be combined with each other.Present invention generally provides a kind of systems of high frequency respirator, and are illustrated to its working principle, non-for itsConventional ventilation method and method for early warning are not illustrated herein.
In addition, the orientation such as " among " and " between " for being previously mentioned in embodiments of the present invention description, does not imply that knotBetween on structure and among, but in gas circuit relationship between among, involved interconnected structure is logical in textPipeline connection is crossed, in addition, the description of the words such as " first ", " second " in text is not constituted to specific amount of limitation, butSimplifying description and distinguishing to facilitate the understanding of the present invention, is not considered as limiting the invention.
Below with reference to attached drawing and in conjunction with embodiment, the present invention will be described in detail.
The present embodiment provides a kind of high frequency respirator system, including turbofan 11, compressed oxygen gas source 15, mixing chamber 14,Air-breathing circuit and high frequency oscillation module 5, the turbofan 11 and the compressed oxygen gas source 15 connect with the mixing chamber 14 respectivelyLogical, the mixing chamber 14 is also connected with the air-breathing circuit；The high frequency oscillation module 5 is located at the air-breathing circuit, is suitable forThe gas in the air-breathing circuit is set to generate oscillation pressure ripple.
It should be noted that the air-source and compressed oxygen gas source 15 are connected to the entrance of the mixing chamber 14 respectively, instituteState the outlet in air-breathing circuit Yu the mixing chamber 14.Herein, it is arranged between the turbofan 11 and the mixing chamber 14There is the second shut-off valve 13, controlled by the gas that second shut-off valve 13 is transported to mixing chamber 14 to turbofan 11,Reduce risk.It is additionally provided with pressure reducing valve 16 between the compressed oxygen gas source and the mixing chamber, for adjusting the defeated of compressed oxygenThe amount of sending.In addition, pressure flow sensor 12 is additionally provided between the turbofan 11 and the mixing chamber 14, to the whirlpoolThe gas that wheel blower 11 is delivered to mixing chamber 14 is monitored.
Here, air first mixes air and compressed oxygen in mixing chamber 14 when being flowed into patient end, then will mixingGas afterwards is delivered to the patient end, on the one hand can reduce the disturbance of gas after turbofan 11 compresses, and plays one and delaysOn the other hand the effect of stream mixes air and compressed oxygen in mixing chamber 14, keeps the distribution of gas average, thisOutside, when the temperature of the air conveyed in turbofan 11 is higher, compressed oxygen can also absorb what the turbofan 11 conveyedThe heat of air.
When the oxygen concentration for needing to convey is lower than 100%, the turbofan 11 is for compressing and being delivered to airMixing chamber mixes air and compressed oxygen, and turbofan 11 provides power for mixed gas, for conveying to patient endGas.And when patient end needs to carry out pure oxygen, at this point, compressed oxygen is sent into air-breathing circuit, whirlpool after depressurizing by pressure reducing valve 16It takes turns blower 11 and air communication one end is closed, conveying turbofan 11 generates high pressure draught at this time, for conveying oxygen.The heightFrequency respirator system further includes filter 19, between the turbofan 11 and the mixing chamber 14, is suitable for filtering instituteState the air of the conveying of turbofan 11.On the one hand the impurity in the gas that the turbofan 11 conveys, another party can be filteredFace, the gas that can be conveyed to the turbofan 11 flows slowly, and after passing the gas through the filter 19, disturbance is reduced.Certainly, the filter 19 also can be set at air intake, that is, be arranged before the turbofan 11.
Here, the high frequency oscillation module includes actuator, piston and diaphragm, and the diaphragm is set on the piston,The actuator drives the piston to do straight reciprocating motion, so that gas be made to generate positive/negative-pressure Reeb.When turbofan 11 is defeatedWhen the gas sent flow to the high frequency oscillation module 5, high frequency oscillation module 5 drives diaphragm to move back and forth by actuator, makes gasOscillation pressure ripple is generated in body.Here, the amplitude of the high frequency oscillation module is up to 100mbar, ventilatory frequency 3-20Hz.The advantages of this arrangement are as follows being used cooperatively by turbofan 11 and high frequency oscillation module 5, is substituted common using airCompressed air will be delivered to patient end after supercharging air by turbofan, without using compressed air source.
In general, there may be disturbances for the gas of the conveying of turbofan 11, and there is also right for the high frequency oscillation module 5The interference of upstream gas circuit.As shown in Figure 1, the high frequency respirator system further includes proportioning valve 2, it is located in the air-breathing circuitAnd between the high frequency oscillation module 5 and the mixing chamber 14, gas is flowed to through the proportioning valve 2 in the mixing chamber 14The high frequency oscillation module 5.It should be noted that flowing to the high frequency oscillation module from the gas that the mixing chamber 14 flows outWhen 5, the proportioning valve 2 is first passed through, the flow and pressure for flowing to the high frequency oscillation module 5 are then adjusted by the proportioning valve 2On the one hand power can reduce the disturbance for the gas that the turbofan 11 conveys, separately furthermore by the setting of the proportioning valve 2On the one hand, conveying is adjusted to the gas pressure and flow of the high frequency oscillation module 5.
Further, since there may be negative pressure for turbofan, gas backstreaming is caused, high frequency respirator system described here is also wrappedCheck-valves 17 is included, is set between the mixing chamber 14 and proportioning valve 2, for preventing the gas backstreaming in the air-breathing circuitTo in the mixing chamber 14.By the setting of check-valves, the gas circuit of high frequency oscillation unit comparative example valve upstream is also avoided to be formed dryIt disturbs.
Since the gas flow of the turbofan 11 conveying is uncontrollable, for high frequency oscillation module 5, the frequency that is workedRate is related to the pressure of the gas of the inflow high frequency oscillation module 5 and flow.As shown in Figure 1, the high frequency respirator systemFurther include first pressure flow sensor 18, is located in the air-breathing circuit and is located at the mixing chamber 14 and the proportioning valveBetween 2, it is adapted to detect for the pressure and flow of the gas that the mixing chamber 14 flows out.That is, being mixed in the gas from describedWhen closing the outflow of room 14, the flow and pressure of the gas flowed out to it are monitored, and are then referred to the adjustment of the proportioning valve 2It leads, so that the pressure for flowing out the gas of the proportioning valve 2 and flow is met the requirement of the preliminary high frequency oscillation module 5, increase and suffer fromThe breathing of person is experienced.
At this point, in order to guarantee to flow into the accuracy of the pressure of the gas of the high frequency oscillation module 5 and flow, the high frequencyRespirator system further includes second pressure flow sensor 4, is located in the air-breathing circuit and is located at the higher-order of oscillation mouldBetween block 5 and the proportioning valve 2, it is adapted to detect for flowing into the pressure and flow of the gas of the high frequency oscillation module 5.NamelyIt says, before gas flows into the high frequency oscillation module 5, the flow and pressure of gas is monitored, and result is fed back toController is adjusted by aperture further progress of the controller to the proportioning valve 2, to guarantee that gas flows into the high frequency vibratingSwing the pressure of module and the accuracy of flow.
It should be noted that the high frequency respirator system further includes oxygen concentration sensor 21, it is located at the air-breathing and returnsLu Zhong, suitable for being monitored to the oxygen concentration in the air-breathing circuit.That is, before gas is transported to patient end,First the oxygen concentration in the air-breathing circuit is monitored, and is timely feedbacked to controller, and in time to the compressed oxygenSource is adjusted, and makes to be input to the oxygen concentration of patient end closer to optimum value.
Since turbofan 11 is when conveying gas, the temperature of turbofan 11 can be gradually increased, described so as to cause sendingThe temperature for the gas that turbofan 11 flows into increases, and is measured the work due to turbofan 11, flows out from the mixing chamber 14The temperature of gas be even as high as 51 DEG C.At this point, refrigerator is provided in the mixing chamber 14, suitable for making in mixing chamber 14Gas cooling.It should be noted that the refrigerator can be semiconductor cooler, refrigerator may be cooling fan.
In addition, the high frequency respirator system further includes temperature sensor 9, it is located in air-breathing circuit, is located at patientBetween end and the mixing chamber 14, suitable for monitoring the gas temperature in air-breathing circuit.Here, gas temperature is supervised in real timeIt surveys, and sends controller to, when the gas temperature in the air-breathing circuit is higher than setting value, increase the running power of refrigeratorOr increase the oxygen-supplying amount of compressed oxygen gas source.
Since the gas of the turbofan 11 conveying is uncontrollable, in order to reduce risk, the high frequency respirator system is alsoIncluding safety valve 3, the safety valve 3 is located in the air-breathing circuit.In case of emergency, the air-breathing circuit and atmosphere are connectedLogical, the gas for conveying the turbofan 11 is exhausted directly among air.
In addition, the high frequency respirator system further includes expiration circuit, it is used for the discharge of the gas of patient's exhalation, it is describedThe outlet in expiration circuit is provided with breather valve 8.In order to further enhance security performance, the high frequency respirator system further includes peaceThe air-breathing circuit and expiration circuit communication are provided with the first shut-off valve 10 in the safety return circuit by full loop.DescribedOne shut-off valve 10 is opened when sucking gas and being abnormal (usually gas flow or pressure is excessive), at this point, breather valve 8Open simultaneously, to be provided with check valve 7 in the expiration circuit at this time for outside a part of gas discharge chamber, only limit gas fromThe expiration circuit is exhaled, and preventing gas from exhalation circuit is that patient supplies.It should be noted that first shut-off valve 10 is beatenThe aperture opened needs to guarantee the enough gas supply needs of patient.
Here, the entrance of the safety return circuit is between the proportioning valve 2 and the high frequency oscillation module, i.e., the described peaceThe connectivity part in full loop and the air-breathing circuit is located at the upstream of the high frequency oscillation module 5, and the high frequency respirator system is alsoIncluding flow-stop valve 20, it is set in air-breathing circuit and between the high frequency oscillation module and patient end, the flow-stop valve20 be check valve, is suitable for gas and passes through to patient end, prevents patient exhalation air from 20 reflux of flow-stop valve.
In addition, the high frequency respirator system further includes third pressure flow sensor 6, commonly referred to as patient (proximal end) flows(pressure) sensor is measured, patient end is set to, suitable for being monitored to the pressure and flow of patient's sucking and the gas breathed out,Under normal circumstances, the third pressure flow sensor 6 is suitable for monitoring the mean airway pressure of patient.Here, the third pressureFlow sensor 6 is set between the air-breathing circuit and the infall and patient end in the expiration circuit.
It should be noted that above-mentioned high frequency respirator system is in Conventional ventilation, high frequency oscillation module is closed, described in unlatchingTurbofan is reached realization by the valve in control duration of ventilation and gas circuit and supplied gas at regular time and quantity；When carrying out high-frequency ventilation,A lasting basic air-flow is provided by the turbofan, to guarantee the stabilization of the mean airway pressure of patient end, is openedThe high frequency oscillation module sets the amplitude and frequency of the high frequency oscillation module, is cooperated by the high frequency oscillation module realExisting high frequency oscillatory ventilation.
In embodiment, only the gas circuit of high frequency respirator system is expounded.The foregoing is merely it is of the invention compared withGood embodiment, is not intended to limit the invention, anyone skilled in the art, it is all the spirit and principles in the present invention itInterior, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.